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26 lines
925 B
Markdown
26 lines
925 B
Markdown
<h2><a href="https://leetcode.com/problems/longest-palindromic-substring">5. Longest Palindromic Substring</a></h2><h3>Medium</h3><hr><p>Given a string <code>s</code>, return <em>the longest</em> <span data-keyword="palindromic-string"><em>palindromic</em></span> <span data-keyword="substring-nonempty"><em>substring</em></span> in <code>s</code>.</p>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> s = "babad"
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<strong>Output:</strong> "bab"
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<strong>Explanation:</strong> "aba" is also a valid answer.
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</pre>
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<p><strong class="example">Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> s = "cbbd"
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<strong>Output:</strong> "bb"
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</pre>
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<p> </p>
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<p><strong>Constraints:</strong></p>
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<ul>
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<li><code>1 <= s.length <= 1000</code></li>
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<li><code>s</code> consist of only digits and English letters.</li>
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</ul>
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